Metrojet’s A321-200 crashed in the Sinai Peninsula 23 minutes after taking off from the Red Sea resort of Sharm el-Sheikh, killing all 224 people on board. The victims were all Russians except for four Ukrainians and one person from Belarus.

The air safety agency said Metrojet needs to thoroughly analyze the situation and weigh all risks before a decision is made Monday on whether to allow the airline to resume flights.